Question

How do you write an equation in slope intercept form given that the line passes through the Point: (–3, 7); Slope: 4?

Answer 1

The main formula of a line is;
`y=ax+b`

We should use one point to find the real equation. If we use (-3,7) point;
`y= ax+b => 7=-3a+b`;
a is the slope of the equation, we found that as `4`;
`7=(-3*4) + b => 7=-12 +b => b=19`;
So the equation of the line will be;
`y=ax+b => ul (y= 4x+19)`